title: Comparison of embryo transfer on day 2, day 3, and day 6: a prospective randomized study.
mesh_terms: D000328:Adult; D001755:Blastocyst / Q000166:cytology*; D004624:Embryo Transfer / Q000706:statistics & numerical data; D004622:Embryo, Mammalian / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000453:epidemiology*; D020554:Sperm Injections, Intracytoplasmic; D013997:Time Factors